One of the parents of a cross has mutation in mitochondria. In that cross, that parent is taken as a male. During segregation of `F_(2)`-progenies that mutation is found in

Options

A. one-third of the progenies
B. none of the progenies
C. all of the progenies
D. fifty per cent of the progenies

Explanation

To solve the question regarding the inheritance of a mitochondrial mutation from a male parent, we can follow these steps:

### Step 1: Understand Mitochondrial Inheritance
Mitochondrial DNA is inherited maternally, meaning that it is passed down from the mother to her offspring. This is because the mitochondria in the sperm are typically destroyed after fertilization, and only the mitochondria from the egg contribute to the mitochondria of the offspring.

**Hint:** Remember that mitochondrial traits are inherited from the mother, not the father.

### Step 2: Identify the Parent with the Mutation
In this case, the parent with the mitochondrial mutation is designated as the male. Since mitochondrial inheritance is maternal, the mutation present in the male parent will not be passed on to the offspring.

**Hint:** Focus on the role of the male parent in mitochondrial inheritance.

### Step 3: Determine the Progeny’s Inheritance
Since the male parent carries the mitochondrial mutation, and mitochondrial traits are not inherited from the father, none of the progeny will inherit the mutation.

**Hint:** Consider how the inheritance pattern affects the progeny based on the parent's sex.

### Step 4: Conclude the Result
Based on the understanding of mitochondrial inheritance, the conclusion is that none of the progenies will exhibit the mitochondrial mutation because it was inherited from the male parent.

**Hint:** Summarize the findings based on the principles of inheritance discussed.

### Final Answer
The mutation will be found in **none of the progenies**.